Fish Lake Reservoir Weather Forecast

    • 47
    • 72

    Mostly Sunny

    • 51
    • 76

    Mostly Sunny

    • 54
    • 77

    Chance Rain Showers

    • 52
    • 77

    Chance Thunderstorms

    • 50
    • 75

    Partly Sunny

    • 51
    • 73

    Partly Sunny

Today 18 Aug Carlton/South St. Louis

Mostly sunny. Highs in the mid 70s. Northwest Winds 5 to 10 Mph.

Tonight 18 Aug Carlton/South St. Louis

Mostly clear. Cold with Lows in the mid 40s. Northwest Winds 5 to 10 Mph.

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  • Temperature Real-Time

Fish Lake Reservoir Temperature Statistics

August Temperature

Duluth International Airport (7.5 miles)

  • Lowest 5 August, 2026

    48.7 °F

  • Average August

    66.5 °F

  • Highest 6 August, 2026

    80.7 °F

Climate (2021–2026)

Duluth International Airport (7.5 miles)

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  • Average Low 2021–2026

    33.3 °F

  • Average 2021–2026

    42.2 °F

  • Average High 2021–2026

    51 °F
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